| Patents for G11B 3 - Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor (2,921) |
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| 05/30/1989 | CA1254998A1 Information signal recording medium and reproducing apparatus therefor |
| 05/17/1989 | EP0179783B1 Apparatus for cutting information into a metal recording medium, particularly a copper medium |
| 05/16/1989 | US4830329 Device for the manufacture of elliptical pickup diamonds |
| 05/02/1989 | US4827467 Record-player switch-off device |
| 05/02/1989 | US4827465 Simplified sound reproducing device having a means for preventing collision between a reproducing stylus and a record disc |
| 04/26/1989 | CN2036696U Hinges used to connect the dust-proof cover and the turntable of electric record player |
| 04/18/1989 | US4823332 Simplified sound reproducing device capable of reproducing a plurality of record discs |
| 04/11/1989 | US4821250 Process and apparatus for the recording of an information signal |
| 03/23/1989 | DE3727135A1 Measuring arrangement for video heads |
| 03/21/1989 | US4814047 Digital audio disks |
| 03/07/1989 | US4811322 Phonograph for a record disk having a plurality of sound grooves |
| 02/28/1989 | CA1250529A1 Multiple segment nonsequential recording |
| 02/22/1989 | CN1003404B Playback selecting device of simple gramophone |
| 02/21/1989 | US4807209 Record carrier body with a follow-on track and apparatus for recording information thereon |
| 02/15/1989 | EP0303355A2 Improvements relating to holograms and diffraction gratings |
| 02/01/1989 | EP0301650A2 Process for the manufacture and back-coating of a galvanic shell |
| 02/01/1989 | EP0301641A1 Master disc and method of manufacturing a matrix |
| 01/31/1989 | US4802156 Cutting machine for pits on CD master |
| 01/25/1989 | EP0164376B1 Process for producing a recording medium |
| 01/24/1989 | US4800305 Pull string mechanism in a pull string type sound reproducing device |
| 01/18/1989 | CN1030492A Recorder for reproducing disc record with multiple output tracks |
| 12/20/1988 | CA1247014A1 Record engraving apparatus |
| 11/29/1988 | US4788676 Record player |
| 11/29/1988 | US4788015 Process for preparation of optical disk substrate |
| 11/16/1988 | CN88102465A Pull string mechanism for pull string loud-speakers device |
| 11/09/1988 | EP0290084A2 Method for marking disc-shaped information carriers |
| 11/01/1988 | US4781895 Candle-powered aroma generator |
| 10/18/1988 | US4779170 Phonograph record illumination device and system |
| 10/12/1988 | CN87202533U Record player |
| 09/28/1988 | EP0284387A2 Master disk |
| 09/15/1988 | DE3741690A1 Record player |
| 09/15/1988 | DE3706639A1 Pickup-arm with a pickup-arm head |
| 08/23/1988 | US4766586 Disc-record player |
| 07/26/1988 | US4759093 Apparatus for cleaning a record disc |
| 07/13/1988 | CN87105984A Simplified sound reproducing device having means for preventing collision between reproducing stylus and record disc |
| 07/06/1988 | CN87105525A Improved record player |
| 07/05/1988 | US4755979 Disc reproducing system for compensating mechanical imperfections |
| 06/30/1988 | WO1988004873A1 A pick-up with an exchangeable front part |
| 06/28/1988 | US4753597 Multiple segment nonsequential recording |
| 06/22/1988 | EP0271888A2 Improved record player |
| 06/21/1988 | US4752921 Record player with means for capturing recording and scanning angle |
| 05/31/1988 | US4748612 Arrangement for cutting information into a record carrier made of metal, particulary copper |
| 05/24/1988 | US4747092 Sound reproduction apparatus |
| 04/27/1988 | CN87205908U Automatic dust-removing device for disc |
| 04/26/1988 | US4740945 Sound reproducing apparatus for non-rotating plate-shaped or sheet-like sound carriers |
| 03/29/1988 | US4734902 Record player |
| 03/23/1988 | EP0260674A2 Free surface casting method |
| 02/17/1988 | CN87105332A Positioning transportation tape for positioning reproducing many of disc records and simple gramophone |
| 02/10/1988 | EP0255649A2 Information signal recording device |
| 01/20/1988 | EP0253769A2 Scanning needle |
| 12/23/1987 | CN86104068A Method for acoustic record with paper as medium |
| 12/22/1987 | US4713856 Apparatus for cleaning digital audio discs |
| 12/08/1987 | US4712208 Disc reproducing system for compensating mechanical imperfections |
| 11/19/1987 | DE3616469A1 Sound carrier film for phonographic records and process for its production |
| 11/17/1987 | US4707815 Apparatus for a record player distinguishing between recorded and unrecorded portions of a disc |
| 11/11/1987 | CN87102999A Simplified sound reproducing device capable of carrying and reproducing a plurality of record discs |
| 11/10/1987 | US4705994 Electric equipment driving circuit |
| 10/20/1987 | US4701903 Automatic record player pick-up arm control device having minimal height |
| 10/13/1987 | US4700198 Process for recording information by irradiation of, an deposition on, a substrate |
| 09/16/1987 | EP0237096A1 Record player |
| 09/15/1987 | US4694449 Record player with a square, viscously damped pick-up arm lift rod |
| 09/15/1987 | US4694446 Simplified sound reproducing device of random selecting type |
| 09/15/1987 | US4694445 Record disc replacing means for a selective playing type sound reproducing device |
| 09/15/1987 | US4694444 Record disc replacing means |
| 08/26/1987 | EP0233207A1 Stopping system for record-player. |
| 08/25/1987 | US4689253 Tallow quaternary ammonium salt |
| 08/19/1987 | EP0233138A1 Manufacturing method for a recorded disc-shaped matrix |
| 08/19/1987 | EP0232293A1 Process and device for recording an information signal |
| 08/13/1987 | WO1987004837A1 Process for producing a prerecorded disk-shaped matrix |
| 08/11/1987 | US4686664 Tone arm assembly |
| 08/11/1987 | CA1225337A1 Record player comprising a control device for the pick-up arm |
| 08/06/1987 | DE3602946A1 Device having a member to be protected |
| 07/14/1987 | US4680747 Multi-message phonograph system |
| 07/07/1987 | US4679183 Sound recording apparatus for blank films and tapes |
| 07/02/1987 | DE3546225A1 Phonographic record and process for its production |
| 06/30/1987 | CA1223527A1 Disk cleaning mat |
| 06/24/1987 | CN86205716U Electric gramophone with emission-type linear tracing tone arm |
| 06/23/1987 | US4675053 Vacullm head with hollow fibers, scrubs and removes debris and cleaning fluid/ |
| 06/02/1987 | US4670868 Simplified sound reproducing device having a plurality of external shaft corresponding to the recorded items |
| 06/02/1987 | US4670867 Simplified sound reproducing device having a plurality of external shaft corresponding to the recorded items |
| 05/27/1987 | CN86107104A Record disc replacing means for a selective playing type sound reproducing device |
| 05/21/1987 | DE3540803A1 Record player with a pivotable pick-up arm |
| 04/09/1987 | DE3535468A1 Process for cutting a modulated spiral-shaped groove in a planar recording carrier |
| 04/01/1987 | CN86104932A Record disc replacing means for a selective playing type sound reproducing device |
| 03/18/1987 | CN85106514A Simple gramophone capable of replaying multiple record |
| 03/17/1987 | US4650735 Master disk with metal peel, readable with optical beam |
| 03/11/1987 | EP0213143A1 Multiple segment nonsequential recording |
| 03/11/1987 | CN86205285U Combination gramophone turntable |
| 03/11/1987 | CN85106417A Playback selecting device of simple gramophone |
| 03/03/1987 | US4648086 Simplified sound reproducing device capable of reproducing a plurality of recorded items |
| 03/03/1987 | US4647395 Phonograph disk care product |
| 02/12/1987 | WO1987000956A1 Process and device for recording an information signal |
| 02/03/1987 | US4640745 Electropolating copper on substrate from bath containing stabilizer and leveling agent |
| 01/29/1987 | WO1987000672A1 Stopping system for record-player |
| 01/26/1987 | US4722080 Transducer arm assembly for disk play-back machines |
| 01/07/1987 | CN85106173A Improved record player |
| 01/06/1987 | US4634386 Audio-visual teaching apparatus |
| 12/30/1986 | US4633329 Information signal recording medium and reproducing apparatus therefor |
| 12/23/1986 | US4631715 Audio straw and cup lid |
| 12/17/1986 | CN85105338A Gramophone needle module on pickup seat |